K63.9
Disease of intestine, unspecified
BillableComplete code, valid to report
K63.9 (also written K639) is a billable ICD-10-CM diagnosis code for disease of intestine, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 14 codes in category K63 (Other diseases of intestine). The Alphabetic Index lists it under 15 entries. Its coding notes include 8 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 15 entries
- Disease, diseased, alimentary canal
- Disease, diseased, bowel
- Disease, diseased, cecum
- Disease, diseased, colon
- Disease, diseased, intestine
- Disease, diseased, intestine, organic
- Enteropathy
- Lesion (s) (nontraumatic), cecum
- Lesion (s) (nontraumatic), colon
- Lesion (s) (nontraumatic), gastrointestinal
- Lesion (s) (nontraumatic), ileocecal
- Lesion (s) (nontraumatic), ileum